Freedreno Gallium3D Gets XA Acceleration Support
Written by Michael Larabel in Mesa on 28 May 2013 at 11:22 AM EDT. 3 Comments
With Qualcomm's newer Snapdragon SoCs no longer having a 2D acceleration core for graphics, the Freedreno driver has implemented XA acceleration support within the reverse-engineered software for implementing 2D over the 3D engine via its Gallium3D driver.

Rob Clark posted the Freedreno A3xx patch-set for implementing the XA acceleration architecture using the Gallium3D driver for 2D. Rob explains that -- at least for the Google Nexus 4 -- the newer Qualcomm Snapdragon devices no longer have a 2D graphics core. While he's implemented the Freedreno XA support, he's required breaking the current XA API, which now must undergo review from fellow XA stakeholders.

The XA state tracker for Gallium3D was developed by VMware for their virtual SVGA II graphics device, which is used by virtual machines on their virtualization platform. XA passes 2D commands to the 3D driver for rendering and is superior to the older Xorg state tracker.

The current Freedreno XA patches can be found on the Mesa mailing list.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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